Ocean Chemistry and Structure

As a result of __________________________, there is not enough calcium carbonate available, needed by corals, crustaceans, mollusks (snails, etc).

• chemosythesis

• photosynthesis

• ocean acidification

• cellular respiration

Carbon dioxide (CO₂) enters the ocean from the ______________________________.

• atmosphere

• photosynthesis of aquatic plants and algae

• melting of sea ice

• freezing of seawater

Ocean acidification occurs when too much _______________________________ enters the ocean from the atmosphere.

• calcium carbonate

• carbon dioxide

• sulfur dioxide

• nitrogen gas

Tags

NGSS.MS-ESS3-4

NGSS.MS-PS1-2

Ocean temperature, salinity, dissolved gases, and density are the same in all parts of the ocean.

• True

• False

Tags

NGSS.MS-ESS2-4

Sodium ions and chloride ions account for about ____________ of ions in seawater.

• 55%

• 65%

• 75%

• 85%

Tags

NGSS.MS-PS1-1

Chloride ions make up 55.03% of the amount of salt present anywhere in the ocean. This is an example of the:

• Theory of evolution by natural selection

• Laws of motion

• Rule of constant proportions

• Cell theory

______________________ is needed by corals, mollusks, and crustaceans to make their skeletons, shells, and structures.

• calcium carbonate

• sodium chloride

• carbon dioxide

• nitrogen gas

Where do most of the ocean salts come from?

• Rainfall

• Decaying organisms

• Hydrothermal vents

• Rivers

Oxygen (O₂), Carbon dioxide (CO₂), and Nitrogen (N₂) are all _________________________ that are important to marine life.

• ions

• dissolved gases

• carbohydrates

• carbon compounds

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the primary component of ocean water?

• Hydrogen

• Oxygen

• Sodium Chloride

• Magnesium